Originally designed for use with e-bikes, the BOX Two Prime 9 Speed Cassette quickly became the go-to for non-powered bikes due to its reputation for extreme durability and the simplicity of having all the range as your riding buddies on their expensive 12-speed setups but you’ll have to shift a whole lot less to find the right gear.

Now Box Components return to the e-bike category with the 12-50T version of the Box Two Prime 9-speed wide-range cassette to give you more teeth on the 3 highest gears for increased durability. This cassette is able to withstand a whole lot of punishment and is the most durable cassette in the Box range. It features all-steel cogs with the largest ones pinned to a lightweight alloy carrier.

Who’s this item for: This is for all riders that have embraced the simplicity and easy setup of 9-speed and need a wide-range cassette to run with their Box Prime 9 drivetrain.

E-bike friendly: Yes, The Box Two Prime 9 components are suitable for use on e-bikes when used with the single-release shifter.

Number of gears: This is a 9-speed cassette.

Weight: 645 grams

Materials / construction: Stamped steel cogs with the largest pinned to a lightweight alloy carrier.

Cog-tooth span: 12 – 14 – 16 – 18 – 22 – 28 – 34 – 42 – 50t

Freehub mounting style: Mounts to standard Shimano style HG freehubs. Not compatible with XD or Microspline freehubs.

Other component compatibility: This cassette is compatible with Box 9-speed drivetrains only. Suitable for use on e-bikes.